【07.28】Seminar：Recursion relations, higher spins, and bottom-up supergravity
Seminar
报告题目：Recursion relations,higher spins,and bottom-up supergravity
报告人：柯文旗，博士后，美国明尼苏达大学
主持人：许勋杰，副研究员，中国科学院高能物理研究所
报告时间：2025年7月28日（周一），下午15:00
报告地点：高能所图书馆楼319
报告摘要：
As an alternative to Feynman rules, on-shell formalism offers an efficient and elegant way to compute amplitudes with arbitrary number of external particles. The construction relies crucially on an appropriate momentum shift. In the massless case, this formalism has proven to be particularly powerful for n-point graviton or gluon amplitudes. However, less is known in the massive case. In this talk, I present a momentum shift in the massive on-shell formalism, which allows us to construct amplitudes in QED, electroweak and supergravity theories. In addition, this method is applied to derive some higher spin (s>1) Compton amplitudes. In the specific case of spin 3/2, using the recursion relations, one recovers supergravity from the bottom up.
个人简介：
Wenqi Ke is a postdoctoral researcher at the University of Minnesota. She obtained her bachelor and master's degree at the Ecole Normale Supérieure and a PhD degree in 2023 at the LPTHE,Sorbonne Université. Her research involves early universe cosmology,higher spins,and scattering amplitudes,as well as intersections of these subjects.
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